It started on Wednesday. During the period, state law requires all registered offenders to report in person to their local law enforcement agency, sheriff's office or nearest Michigan State Police post to verify their address.

Tier 1 offenders must verify their address annually, during the first 15 days of January.

Tier 2 offenders must verify their address semi-annually, during the first 15 days of January and July.

Tier 3 offenders must verify their address quarterly, during the first 15 days of January, April, July and October.